JP2011168354A - Device and method for collecting operation sound - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method for effectively collecting operation sounds of a device. <P>SOLUTION: The device for collecting the operation sounds respectively and simultaneously receives radio signals transmitted from each operation sound collecting device 4 for collecting the operation sounds at a moving part and a fixed part of an escalator 100 and outputs the operation sound data included in the respective radio signals and related to the tilt angle to a central management device 1 through a relay device 3. The central management device 1 receiving the data determines a position where the operation sound data, which responds based on the respective input tilt angle data, is collected, and determines whether the operation sounds are abnormal by comparing the operation sound data responding to the position and the operation sound data stored in HDD1c during a normal state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a monitoring system for monitoring a failure of a plant or the like, and more particularly to an operation sound collection device and an operation sound collection method capable of collecting operation sounds from a plant having a movable part to realize a failure diagnosis function. .

  In general, a technique for diagnosing an abnormality in a device is collected by collecting operation sounds of a device such as a plant and comparing the collected operation sounds with normal operation sounds stored in a database in advance. ing. As a prior art regarding the collection of operation sounds, there is a proposal related to a passenger conveyor monitoring device and a remote monitoring system (see, for example, Patent Document 1).

JP 2009-12891 A

  In Patent Document 1 described above, the operation sound is collected from both the active sound collection unit and the fixed sound collection unit of the passenger conveyor, but when it is determined that the operation sound from the operation sound collection unit is abnormal, The sound collection is performed by switching the operation sound collection from the active sound collection unit to the fixed unit. That is, first, sound collection is performed by the active sound collection unit while the passenger conveyor makes at least one round. When it is determined that the operation sound is abnormal from the operation sound collection unit, a fixed sound collection unit is installed at a place where the operation sound is assumed to be abnormal, and the passenger conveyor is operated to collect the operation sound. There is a need. In order to prevent abnormal noise from entering during operation sound collection, the passenger conveyor is operated without carrying passengers, so if it takes time to collect operation sound, it takes less time to get passengers on the passenger conveyor. There is a problem of becoming.

  Therefore, an object of the present invention is to provide an operation sound collection device and an operation sound collection method that can efficiently collect operation sounds of the device.

  In order to achieve the above object, an operation sound collection system for collecting operation sounds from a target device, which is provided in a movable part of the device and includes an inclination sensor, and collects operation sounds of the movable part of the device. And a second operation that is provided at a fixed portion of the device and that includes an inclination sensor and collects the operation sound of the fixed portion of the device simultaneously with the first operation sound collection unit. A sound collecting means and a radio signal installed outside the device and transmitted from the first operating sound collecting means and the second operating sound collecting means at the same time and included in the respective radio signals; The wireless relay means for outputting the inclination angle data and the operation sound data associated with the inclination angle data, and the respective inclination angle data and the inclination angle data output from the wireless relay means Control means to which the associated operation sound data is input, and the control means includes a database that stores the operation sound data at the normal time, and corresponds to each of the input inclination angle data. The operation sound data is collected and the operation sound data corresponding to the position is compared with the normal operation sound data stored in the database to determine the abnormality of the operation sound. An operating sound collection system characterized by the above is provided.

  In addition, the operation sound collection method used in the operation sound collection system for collecting operation sounds from the target device, the operation sound collection system being provided in a movable part of the device and including an inclination sensor, the device First operation sound collecting means for collecting the operation sound of the movable part of the apparatus, and a first sensor for collecting the operation sound of the fixed part of the apparatus, the inclination sensor being provided in the fixed part of the apparatus. A second operation sound collecting means for collecting the operation sound data at the same time; and a database storing operation sound data for normal operation. The second operation sound collection means and the second operation sound are installed outside the apparatus. The wireless signals transmitted from the collecting means are simultaneously received, and the inclination angle data included in the respective wireless signals and the operation sound data associated with the inclination angle data are output and output. Each of the inputted inclination angle data and the operation sound data associated with the inclination angle data are input, the position where the corresponding operation sound data is collected is determined based on the input inclination angle data, and the position The operation sound collecting method is characterized in that the operation sound abnormality is determined by comparing the operation sound data corresponding to the above and the normal operation sound data stored in the database.

  According to the present invention, it is possible to efficiently collect the operation sound of the apparatus.

The figure for demonstrating the outline of the operation sound collection system regarding one Embodiment of this invention. The block diagram for demonstrating the structure of the relay apparatus of the operation sound collection system regarding the embodiment. The block diagram for demonstrating the structure of the operation sound collection apparatus of the operation sound collection system regarding the embodiment. Sequence diagram showing a case where operation sound is collected periodically (collection of fixed time operation sound) in the operation sound collection method to which the operation sound collection system according to the embodiment is applied The sequence diagram in the case of collecting operation sound at arbitrary timing by the operation sound data collection command in the operation sound collection method to which the operation sound collection system according to the embodiment is applied. The figure shown about the form which transmits delimiter data to a relay apparatus from each operation sound collection device of the operation sound collection system regarding the embodiment. The figure shown about the form which transmits delimiter data to a relay apparatus from each operation sound collection device of the operation sound collection system regarding the embodiment. The figure which shows typically the example of preparation of the division | segmentation information using the inclination sensor of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of preparation of the division | segmentation information using the inclination sensor of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of a movement of the movable part of the elevator of the operation sound collection system regarding the embodiment. The figure which shows typically the example of the position which collects the operation sound of the elevator of the operation sound collection system regarding the embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram for explaining an outline of an operation sound collection system according to the present embodiment.

  As shown in FIG. 1, the operation sound collection system includes a central management device 1, a LAN IF (Local Area Network Interface) 2, relay devices (1 to n) 3, and an operation sound collection device 4.

  The central management device 1 includes a CPU (Central Processing Unit) 1a, a LAN IF 1b, and an HDD 1c. The CPU 1 a is a control device that controls the central management apparatus 1, and transmits command information such as an operation sound collection request to a plurality of relay apparatuses 3 via the LAN IF 2. Further, the CPU 1a compares the received data with data stored in an HDD (Hard Disk Drive) 1c for analysis (abnormality diagnosis or the like). The LAN IF 1b is an interface for connecting to a plurality of relay apparatuses 3 via the LAN. The HDD 1c receives the operation sound data of the escalator (plant) 100 received (input) from the relay device 3, inclination angle data (described later) corresponding to the operation sound data, and operation sound data when the escalator (plant) 100 is normal. The tilt angle data corresponding to the operation sound data is stored (accumulated).

  The relay device 3 receives the operation sound of the escalator (plant) 100 collected by the plurality of operation sound collection devices 4 via radio. Further, a plurality of relay apparatuses 3 are provided, and each relay apparatus 3 simultaneously receives the operation sound of the escalator (plant) 100 collected by the set plurality of operation sound collection apparatuses 4 via radio. Therefore, the relay device 3 includes a plurality of wireless IFs (interfaces), and simultaneously receives the operation sounds of the escalator (plant) 100 from the plurality of operation sound collection devices 4 via the respective wireless IFs. Can do.

  A plurality of operation sound collection devices 4 are installed at predetermined locations of the escalator (plant) 100. For example, it is installed in the operating part and fixed part of the escalator (plant) 100. The operation sound can be collected simultaneously from the operation sound collection device 4 installed in the operation part and the fixed part of the escalator (plant) 100. Each of the plurality of operation sound collection devices 4 performs a pairing process with the relay device 3 to set a wireless connection. Devices that have performed pairing processing can establish a wireless connection.

  Command information such as an operation sound collection request from the central management apparatus 1 is sent to a plurality of relay apparatuses 3 in the system through the LAN IF 2. The relay device 3 connects wirelessly based on the sent command information, and transmits the command information to the operating sound collection device 4 that is managed. The operation sound collection device 4 operates based on the command information and sends the operation result back to the relay device 3. The operation result is, for example, collected operation sound data. The relay device 3 transmits the sent result to the central management device 1 through the LAN IF 2 once a day, for example. The collected operation sound data and the like are temporarily stored in the relay device 3. The central management device 1 performs display based on the received operation sound data. In addition, the central management device 1 performs data storage, analysis, and the like of the transmitted operation sound data. The collected operation sound data and the like are stored in the HDD 1c which is a secondary storage device of the central management device 1.

  FIG. 2 is a block diagram showing the configuration of the relay device 3 described above. The relay device 3 includes a CPU 31, a LAN IF (interface) 32, a program ROM (Read Only Memory) 33, a data storage ROM (Read Only Memory) 34, a work RAM (Random Access Memory) 35, a real timer 36, a wireless IF (interface). 37).

  The CPU 31 is a control device that operates according to a program stored in the program ROM 33. The program ROM 33 stores a program that operates in accordance with command information sent from the central management device 1. The data storage ROM 34 stores operation sound data received from each operation sound collection device 4. The work RAM 35 is a work memory area that temporarily stores operation sound data received from each operation sound collection device 4. The real timer 36 is a timer module that sets the value of time data that is command information from the central management device 1.

  The CPU 31 operates based on command information from the central management apparatus 1 sent from the LAN IF 32. For example, in the case of a time setting command, the value of the time data sent is set in the internal real timer 36. Further, a time setting command is simultaneously transmitted to the managed operation sound collection device 4 through a plurality of wireless IFs (interfaces) 37 provided therein. The CPU 31 receives the setting end from each operation sound collection device 4 through the wireless IF (interface) 37 and then notifies the central management device 1 of the setting end through the LAN IF 32.

  When operating sound data is sent from the operating sound collection device 4, the data from the wireless IF (interface) 37 is temporarily stored in the work RAM 35. Using the delimiter data sent simultaneously, the data in the work RAM 35 is stored in the data storage ROM 34 in association with the delimiter data. After completion of the storage process, the central management apparatus 1 is notified of the end of collection through the LAN IF 32. After that, the central management device 1 sends a data sending command and receives necessary operation sound data from the data storage ROM 34 of the relay device 3.

  Next, FIG. 3 is a block diagram showing an internal configuration of the operation sound collection device 4. The operation sound collection device 4 includes a control CPU 41, a power supply circuit 42, a battery 43, a wireless IF (interface) 44, a real timer 45, a ROM 46, a RAM 47, a microphone + IF 48, and a tilt sensor 101.

  The control CPU 41 is a control device that operates according to a control program stored in the ROM 46. The control CPU 41 operates in response to an operation command from the wireless IF (interface) 44. The power supply circuit 42 is a circuit that receives an electromotive force from the battery 43 and performs control for supplying power to each device of the operation sound collection device 4. The battery 43 is a power storage device that stores electromotive force. Since the operation sound collection device 4 is also installed in a movable part (for example, a step) of the escalator (plant) 100, a battery 43 for operating alone is required. The wireless IF (interface) 44 is a wireless device for wirelessly transmitting the collected operation sound of the escalator (plant) 100 to the relay apparatus 3. Since the operation sound collection device 4 is also installed in the movable part of the escalator (plant) 100, it is desirable to wirelessly transmit the collected operation sound. The real timer 45 is a timer module that sets the activation time of the control CPU 41 and the like. By using the real timer 45, sound data collection can be started with high accuracy. The ROM 46 stores a control program executed under the control of the control CPU 41. The RAM 47 is a memory device that loads a control program read from the ROM 46 and uses it as a temporary storage area. The microphone + IF (interface) 48 is a sound collection device that collects operation sounds of the escalator (plant) 100. The microphone + IF (interface) 48 is a device to which an interface for outputting operation sound data collected by the microphone is connected, and is provided in each of the movable part and the fixed part of the escalator (plant) 100. The tilt sensor 101 is a tilt sensor that detects the tilt of the place where the microphone + IF (interface) 48 is installed. When the microphone + IF (interface) 48 is installed in the movable part of the escalator (plant) 100, the inclination of the microphone + IF (interface) 48 can be detected.

  The control CPU 41 operates based on a control program stored in the ROM 46. The control CPU 41 performs an operation in response to an operation command from the wireless IF (interface) 44. For example, when the operation command is a time setting command, time data is set in the real timer 45 based on the time setting command. Thereafter, the control CPU 41 sends a time setting completion to the relay device 3 via the wireless IF (interface) 44 (described later).

  The control CPU 41 sets the activation time in the real timer 45 (periodically). After this setting, the control CPU 41 transmits a power supply low consumption output mode command to the power supply circuit 42 that supplies power from the battery 43, and the control CPU 41 also enters a power supply low consumption operation (mode). The power supply circuit 42 receives the power low power consumption output mode command and stops the power supply to the wireless IF (interface) 44, the microphone + IF 48, the tilt sensor 101, and the like. The real timer 45 notifies the control CPU 41 when the set activation time is reached. Upon receiving this notification, the control CPU 41 is activated and returns from the low power consumption output mode to the normal operation mode.

  In addition, when the operation sound collection time is reached, the control CPU 41 notifies the relay apparatus 3 of the start of the sound collection operation via the wireless IF (interface) 44 and performs the operation sound collection operation (processing). The control CPU 41 performs an operation sound collection operation whenever an operation sound collection command is received from the wireless IF (interface) 44. During the operation sound collection operation (processing), the control CPU 41 temporarily stores (stores) data (operation sound data and inclination angle data) sent from the microphone + IF 48 and the inclination sensor 101 in the RAM 47, and operates the operation sound data (received sound). Data) and delimiter information (described later) obtained from the tilt angle data are sent to the relay device 3 via the wireless IF (interface) 44. The delimiter information is, for example, a method in which the data is superimposed and transmitted (described later: see FIG. 6), and a method in which the data CH is divided and transmitted as audio data in the sound data CH and the delimiter information CH (described later). : See FIG. 7). By using the delimiter information obtained from the tilt angle data, it is possible to grasp the number of laps of a device that moves periodically, such as an escalator, while reducing the influence of vibration without causing aging deterioration due to wear, etc. In addition, it is possible to improve the accuracy of specifying the positions of the movable part that collects the operation sound data and the movable part that does not collect the operation sound data.

  Next, delimiter information (also referred to as delimiter data) will be described in detail.

  When the part of the escalator (plant) is periodically moved, for example, the separation information is defined as any one of the positions where the inclination of the movable part is reversed with the inclination angle of 90 degrees as a reference. FIG. 8 is a diagram schematically illustrating an example of creation of delimiter information using an inclination sensor. Separation information is created by attaching the tilt sensor 101 to the step (movable part) of the escalator. In this case, the separation information is created based on the inclination angle of 90 degrees with the position reversal at the lower part of the escalator as the separation. Using this delimiter information, it is possible to grasp the number of laps when inspecting a periodically moving device such as an escalator. Moreover, the position of the movable part which collected the operation sound data can be specified.

  For example, as shown in FIG. 9, the inclination sensor 101 attached to the step of the escalator 100 is in a state of moving from the lower stage toward the upper stage (state A), and the inclination angle obtained from the inclination sensor 101 is 180 degrees. Degree (see FIG. 8). Next, as shown in FIG. 10, when the tilt sensor 101 moves to the upper position and is reversed (state B), the tilt angle obtained from the tilt sensor 101 is reversed because the tilt is performed. It is between ˜360 degrees (see FIG. 8). Subsequently, as shown in FIG. 11, when the tilt sensor 101 is reversed and moves the back surface of the escalator 100 from the upper stage toward the lower stage (state C), the tilt angle obtained from the tilt sensor 101 is about It becomes 330 degrees (see FIG. 8). Then, as shown in FIG. 12, when the tilt sensor 101 moves to the lower position and is reversed (state D), the tilt angle obtained from the tilt sensor 101 is reversed. Therefore, it is between 0 and 360 degrees (see FIG. 8). Thereafter, the process returns to the first state A again. As described above, the escalator 100 is assumed to include a periodically movable portion.

  Next, the operation of this embodiment will be described with reference to the sequence diagrams of FIGS.

  FIG. 4 is a sequence diagram illustrating a case where operation sound collection is regularly performed (constant time operation sound collection) in the operation sound collection method to which the operation sound collection system according to the present embodiment is applied.

  The central management device 1 starts setting a timer value by transmitting command information such as a time setting command to the plurality of relay devices 3 in the system through the LAN IF 2 (step S101). Each relay device 3 is wirelessly connected based on the time setting command that is the received command information, and transmits the command information (time setting command) to the managed operation sound collection devices 4 all at once, thereby realizing real The timer value setting is started (step S102). Each relay device 3 can reduce the error in time synchronization by simultaneously transmitting command information (time setting command) to each operation sound collection device 4 to be managed. The CPU 31 of the relay device 3 operates according to command information (time setting command) sent from the central management device 1 via the LAN IF 32. When the command information sent from the central management device 1 is a time setting command, the value of the sent time data is set in the real timer 36 of the relay device 3. Further, a time setting command is simultaneously transmitted to a plurality of operation sound collection devices 4 set to be managed by the relay device 3 through a plurality of wireless IFs (interfaces) 37 inside.

  The control CPU 41 of the operation sound collection device 4 operates based on the time setting command received via the wireless IF (interface) 44. That is, when the command information sent from the relay device 3 is a time setting command, the time data is set in the real timer 45 of the operation sound collection device 4 (step S103). Thereafter, the control CPU 41 of the operation sound collection device 4 sends a time setting completion to the relay device 3 via the wireless IF (interface) 44 and the operation of the real timer 45 is started. The sound collection process is stopped (step S104). By stopping the operation (operation sound collection process) until the set time, the power supply to the main part including the wireless IF 44 is stopped, and the consumption of the battery 43 is reduced.

  The operation sound collection device 4 (periodically) sets the activation time of the control CPU 41 in the real timer 45. After this setting, the operation sound collection device 4 issues a power consumption low output mode command to the power supply circuit 42 that supplies power from the battery 43, and the operation sound collection device 4 also enters the power supply low consumption operation. The power supply circuit 42 of the operation sound collecting device 4 suspends power supply to the wireless IF (interface) 44, the microphone + IF 48, the tilt sensor 101, etc. in response to a command to shift to the low power consumption output mode.

  After the CPU 31 of the relay device 3 receives the setting completion from each operation sound collection device 4 via the wireless IF (interface) 37, the CPU 31 of the relay device 3 sends a completion confirmation (notification of completion of collection) to the central management device 1 through the LAN IF 32. Notification is made (step S105). The central management device 1 receives the notification and confirms completion (step S106).

  The real timer 45 of the operation sound collection device 4 starts the timer (step S107), and the control CPU 41 notifies the relay device 3 of the start of the sound collection operation via the wireless IF (interface) 44. The CPU 31 of the relay device 3 receives the sound collection operation start notification from each operation sound collection device 4 via the wireless IF (interface) 37, and then enters a collection start waiting state (step S108). Send the notification. After receiving the sound collection operation start notification, the central management apparatus 1 enters a collection start waiting state (step S109).

  The real timer 45 of the operation sound collection device 4 notifies the control CPU 41 when the set activation time is reached. Upon receiving this notification, the control CPU 41 is activated and returns from the low power consumption output mode to the normal operation mode. The control CPU 41 of the operation sound collection device 4 performs operation sound collection operation (step S110). The operation sound collection operation of each operation sound collection device 4 simultaneously performs operation sound collection operations for both the movable part and the fixed part. As described above, the operation sound data collected at the same time can be compared by simultaneously performing the operation sound collection operations of both the movable portion and the fixed portion. Each operation sound collection device 4 transmits the sound data of the collected operation sound to the relay device 3 via the wireless IF 44. The relay device 3 simultaneously receives and stores the sound data of the operation sound transmitted from each operation sound collection device 4 via the plurality of wireless IFs (step S111).

  The relay device 3 notifies the central management device 1 of the start of the sound collection operation. Upon receiving the notification, the central management device 1 transmits a transfer start command for starting the transfer (transmission) of the sound data to the relay device 3, and starts to extract the sound data (step S112). The relay device 3 receives the instruction, extracts the sound data stored in the data (reads: step S113), and transmits it to the central management device 1. The central management device 1 stores the received sound data (data storage) (step S114).

  As described above, the operation sound data is periodically collected.

  Next, FIG. 5 is a sequence diagram in the case where operation sound collection is performed at an arbitrary timing according to an operation sound data collection command in the operation sound collection method to which the operation sound collection system according to the present embodiment is applied.

  The central management device 1 transmits a collection start command, which is an operation sound collection start command, to each relay device 3 in the system via the LAN IF 2 to start operation sound collection (step S201). The relay device 3 is connected wirelessly based on the received collection start command, and transmits the collection start command to the operating sound collection device 4 being managed.

  The control CPU 41 of each operation sound collection device 4 receives and accepts a collection start command via the wireless IF (interface) 44 (step S202), and starts an operation sound collection operation (step S203). The control CPU 41 of each operation sound collection device 4 notifies a collection start response as a sound collection operation start to the managed relay device 3 via the wireless IF (interface) 44.

  The relay device 3 that has received the notification enters a collection start waiting state (step S204), and notifies (replies) a collection start response to the central management device 1 as a sound collection operation start. The central management apparatus 1 that has received the notification enters a collection start waiting state (step S205).

  The control CPU 41 of each operation sound collecting device 4 temporarily stores the sound data of the operation sound from the microphone + IF 48 and the tilt sensor 101 in the RAM 47 after starting the sound collection operation, and receives the separation information obtained from the received sound data and the tilt angle as a wireless IF (interface) ) 44 to the relay device 3 (step S206).

  When the operation sound data is sent from the operation sound collection device 4, the relay device 3 temporarily stores the data from the wireless IF (interface) 37 in the work RAM 35 (step S207). Data in the work RAM 35 is divided and stored in the data storage ROM 34 using the code of the delimiter data sent simultaneously. After completion of the storage process, the central management apparatus 1 is notified of the end of collection through the LAN IF 32. In response to the notification, the central management device 1 transmits a data transmission command to the relay device 3 in order to start extracting the sound data of the operation sound stored in the relay device 3 (step S208). In response to the notification, the relay device 3 takes out the necessary operation sound data from the storage ROM 34 of the relay device 3 and transmits it to the central management device 1 (step S209). The central management device 1 that has received the sound data stores it in the HDD 1c (step S210).

  Next, a case where the delimiter data is transmitted from each operation sound collection device 4 to the relay device 3 will be described with reference to FIGS. 6 and 7.

  Each operation sound collection device 4 collects sound data 200 and inclination angle data 201 of operation sound of the escalator (plant) 100. The collected tilt angle data 201 is converted into delimiter data 202 by the control CPU 41 of each motion sound collection device 4. For example, as described above, the reversal position is detected based on the tilt angle data 201 to determine whether it is a delimiter position, and when it is determined that it is a delimiter position, it is generated as delimiter data 202 (see FIG. 13 etc.). Separation data 202 generated by the control CPU 41 of each operation sound collection device 4 is superimposed on the collected sound data 200 to generate transmission data 203.

  In another form, the collected tilt angle data 201 is converted into delimiter data 202 by the control CPU 41 of each motion sound collection device 4. The delimiter data 202 generated by the control CPU 41 of each operation sound collection device 4 is one channel of stereo data that is transmission data, for example, the right (R) channel, and the collected sound data 200 is the other channel of the transmission data. Channel, for example, left (L) channel, and both R and L channels generate one transmission data (stereo data). In addition, the transmission method of the delimiter data 202 transmitted from each operation sound collection device 4 to the relay device 3 is not limited to the above-described form, and a form transmitted from each operation sound collection device 4 to the relay device 3. If it is. By adopting such a form, transmission data can be simplified, and the amount of data to be transmitted can be reduced.

  Next, in the description of the delimiter data described above, the step of the escalator (plant) 100 moves from the lower stage to the upper stage on the front side and moves from the upper stage to the lower stage on the back side, but is not limited thereto. is not. For example, as shown in FIGS. 13 to 17, the front side of the escalator (plant) 100 may be moved from the upper stage to the lower stage, and the back side may be moved from the lower stage to the upper stage.

  For example, any one of the positions where the inclination of the movable part is reversed with the inclination angle of 90 degrees as a reference is set as the separation position. FIG. 13 is a diagram schematically illustrating an example of creation of delimiter information using an inclination sensor. Separation information is created by attaching the tilt sensor 101 to the step (movable part) of the escalator. In this case, the separation information is created based on the inclination angle of 90 degrees with the position reversal at the lower part of the escalator as the separation. As shown in FIG. 14, the inclination sensor 101 attached to the step of the escalator 100 is in a state of descending from the upper stage to the lower stage (state D), and the inclination angle obtained from the inclination sensor 101 is 180 degrees. (See FIG. 13). Next, as illustrated in FIG. 15, when the tilt sensor 101 moves to the lower position and is reversed (state E), the tilt angle obtained from the tilt sensor 101 is reversed because the tilt is performed. It is between ˜0 and 360 degrees (see FIG. 13). Subsequently, as shown in FIG. 16, when the tilt sensor 101 is reversed and moves the back surface of the escalator 100 from the lower stage toward the upper stage (state F), the tilt angle obtained from the tilt sensor 101 is about It becomes 330 degrees (see FIG. 13). Then, as shown in FIG. 17, when the tilt sensor 101 moves to the upper position and is reversed (state G), the tilt angle obtained from the tilt sensor 101 is reversed. Therefore, it is between about 330 to 360 to 180 degrees (see FIG. 13). After that, it returns to the initial state D again.

  The central management device 1 determines which position (movable part) of the escalator (plant) 100 the received sound data is based on the sound data of the escalator (plant) 100 received from each relay device 1, the inclination angle data, and the separation information. It is also possible to determine whether the sound data is a fixed portion or the like. For example, as shown in FIG. 18, if the microphone + IF 48 and the tilt sensor 101 are installed at the upper position 110 and the lower position 112 which are fixed parts of the escalator (plant) 100, there is no change in the tilt angle data. Thus, it can be determined that the sound data is a place where the fixed portion is installed in advance. Similarly, in the case of the microphone + IF 48 and the tilt sensor 101 installed on the step 111 that is a movable part of the escalator (plant) 100, the tilt angle data periodically changes with reference to the delimiter information. ) It is possible to determine at which position of the escalator (plant) 100 the sound data when the movable part 100 is located.

  Next, the central management device 1 compares the sound data in the state A with the sound data in the normal state A stored in the HDD 1c of the central management device 1, for example, and compares the threshold data stored in the HDD 1c. If it is within the range, it is determined as normal, and if it is out of the threshold range, it is determined as abnormal. For example, when the volume of sound data is used, the threshold value range of the sound data in the normal state A is, for example, 20 to 30 db. If the collected sound data in the state A is, for example, 25 db, it is determined as normal and collected. If the sound data in state A is 35 db, for example, it is determined that there is an abnormality. In addition to the sound data volume, the sound data frequency or the like, or both the volume and frequency may be used.

  Further, as shown in FIG. 18 described above, since the operation sound data of the fixed portions 110 and 112 and the movable portion 111 at the same time are collected at the same time, it is possible to compare both to determine whether or not there is an abnormality. it can. For example, as the operation sound data collected at 6:30 on August 7, the fixed part 110 is 25 db, the fixed part 112 is 28 db, the state A of the movable part 111 is 30 db, and the state B of the movable part 111 ( Sound data is collected as 34 db near the fixed part 110), state C of the movable part 111 is 29 db, state D of the movable part 111 (near the fixed part 112) is 41 db, and the fixed part 110 is fixed at 20 to 30 db as a threshold. The portion 112 is 15 to 25 db, the state A of the movable portion 111 is 25 to 35 db, the state B of the movable portion 111 (near the fixed portion 110) is 30 to 40 db, the state C of the movable portion 111 is 25 to 35 db, A case where the state D (near the fixed portion 112) is set as 35 to 40 db will be described.

  The central management device 1 determines whether or not the collected sound data is within a threshold value. The collected sound data is not within the threshold value when the state D of the movable portion 111 (near the fixed portion 112) is 41 db. The state D of the movable part 111 is a state located at substantially the same place as the fixed part 112. Furthermore, the volume of the collected sound data at the time of 6:30 on August 7 of the fixed portion 112 is 28 db which is not within the threshold value, and is determined to be abnormal. Since the sound data at two locations indicate an abnormality, the abnormality can be detected with a higher probability. As described above, since the sound data of the movable part and the fixed part at the same time are collected at the same time, it is possible to determine the abnormality with higher accuracy compared to the case of collecting at different times. That is, if the sound data of the movable part and the fixed part are collected at different times, the possibility of detecting both abnormal sound data at the same time is low, and it is not possible to compare sound data of the same time. In this embodiment, the form which collects the sound data of a movable part and a fixed part simultaneously is taken.

  Furthermore, an abnormal position is estimated when moving in a place other than the movable part that collects sound data (for example, an escalator step that does not collect sound data) and when moving through a fixed part. It becomes possible. For example, in the case of an escalator, if there is an abnormal sound caused by an abnormal step (such as wear) other than the step (movable part) where a microphone + IF 48 etc. is installed to collect sound data, Since the collected sound data is also collected at the same time as the movable part, by comparing the sound data with the movable part, it is possible to estimate the position of the step of the escalator that has not collected the sound data in which the abnormal sound is detected. For example, when it is detected that the sound data at 7:20 on December 10 at the fixed portion 110 is 35 db (out of the threshold range), and the state A or the state C ( If it is detected that the sound data at the position where the reversing operation is not performed is within the threshold range, the position of the escalator step that has passed through the fixed portion 110 at 7:20 on December 10 is abnormal. Determine. The position of the step is specified, for example, if there is no abnormality in the sound data at 7:20 on December 10, in the state A or state C of the movable part 111, the position is far from the movable part 111. If the sound data at 7:20 on December 10 in the state A or the state C of the movable part 111 is abnormal, it is determined that the position is close to the movable part 111. In addition, in the case of other causes such as a belt or an operating chain, even if the sound data of the belt or the operating chain itself is not collected, the belt or the operating chain may be different in a fixed part installed nearby. When the sound is collected, it can be estimated that there is a possibility of abnormality of the belt or the operation chain itself. In the above-described embodiment, the escalator has been described as a plant apparatus including a part that periodically moves. However, the present invention is not limited to this. For example, it may be a plant apparatus including a part that periodically moves, such as a belt conveyor.

  By using this embodiment, it is possible to efficiently collect operation sounds of plant devices such as escalators. That is, by collecting simultaneously the operation sound of the plant equipment with a mixture of moving parts and fixed parts at the same time, the sound data can be collected in a short time to shorten the abnormality inspection time and detect the abnormal sound with high accuracy. It can be performed. In addition, using the delimiter information, it is possible to grasp the number of laps of a device that moves periodically, such as an escalator, while reducing the influence of vibration without causing aging deterioration due to wear, etc., and operating sound data It is possible to improve the accuracy of specifying the position of the movable part or the like that has collected.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 1 ... Central management apparatus, 2 ... LAN, 3 ... Relay apparatus, 4 ... Operation sound collection apparatus, 1a, 32 ... LAN IF, 1b ... CPU, 1c ... HDD, 33 ... Program ROM, 34 ... Data storage ROM, 35 ... Work RAM, 36, 45 ... Real timer, 37 ... Wireless IF1-m, 41 ... Control CPU, 42 ... Power supply circuit, 43 ... Battery, 48 ... Microphone + IF, 100 ... Escalator (plant), 101 ... Inclination sensor.

Claims (7)

An operation sound collection system for collecting operation sounds from a target device,
A first operation sound collecting means which is provided in the movable part of the device and includes an inclination sensor and collects an operation sound of the movable part of the device;
A second operation sound collecting means that is provided in the fixed portion of the device and includes an inclination sensor, and collects the operation sound of the fixed portion of the device simultaneously with the first operation sound collecting unit;
The radio signals installed outside the device and simultaneously receiving the radio signals transmitted from the first operation sound collection unit and the second operation sound collection unit are simultaneously received, and the inclination angle data included in the respective radio signals and Wireless relay means for outputting operation sound data associated with the tilt angle data,
Each of the tilt angle data output from the wireless relay means and a control means to which the operation sound data associated with the tilt angle data is input,
The control means includes a database storing normal operation sound data, and determines a position where the corresponding operation sound data is collected based on each of the input tilt angle data. An operating sound collection system, wherein operating noise abnormality is determined by comparing corresponding operating sound data with normal operating sound data stored in the database.   The motion sound collection system according to claim 1, wherein the movable part of the device moves periodically.   One of the positions where it is determined that the movable part is inverted based on the tilt angle data is detected as delimiter information, and the number of laps of the movable part is counted based on the delimiter information. The operation sound collection system according to claim 1 or 2.   4. The operation sound collection system according to claim 1, wherein the delimiter information is superimposed on the operation sound data and transmitted to the wireless relay unit.   The operation sound according to claim 1 or 3, wherein the delimiter information is used as one channel of stereo data as transmission data, and is transmitted to the wireless relay means as the operation sound data on the other channel. Collection system. An operation sound collection method used in an operation sound collection system for collecting operation sounds from a target device,
The operation sound collection system is provided in a movable part of the apparatus, and includes a tilt sensor, and is provided in a first operation sound collection means for collecting operation sounds of the movable part of the apparatus, and in a fixed part of the apparatus. And a second operation sound collecting means that includes an inclination sensor and collects operation sounds of the fixed portion of the apparatus simultaneously with the first operation sound collection unit, and a database that stores operation sound data at normal times. ,
The radio signals installed outside the device and simultaneously receiving the radio signals transmitted from the first operation sound collection unit and the second operation sound collection unit are simultaneously received, and the inclination angle data included in the respective radio signals and The operation sound data associated with the tilt angle data is output,
Each of the output tilt angle data and the operation sound data associated with the tilt angle data are input,
Determine the position where the corresponding operation sound data was collected based on each input tilt angle data,
An operation sound collecting method, wherein operation sound abnormality is determined by comparing operation sound data corresponding to the position with normal operation sound data stored in the database.   The operation sound collecting method according to claim 6, wherein the movable part of the device moves periodically.

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